var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
const history = require('connect-history-api-fallback');

let jwt = require('./src/Uilt/jwt');

var loginRouter = require('./routes/login');
var studentRouter = require('./routes/student');



var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

app.use(history());
app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

//使用中间件来对请求进行拦截
app.use(jwt.provenjwt("yy"));
//处理异常的中间件
app.use(function (err, req, res, next) {
  if (err.status == 401) {
    res.json({ code: 401, msg: "未授权,请先登陆" })
    // res.json(err)
  } else {
    next();//放行
  }
})



app.use('/student', studentRouter);
app.use('/login', loginRouter);

// catch 404 and forward to error handler
app.use(function (req, res, next) {
  next(createError(404));
});

// error handler
app.use(function (err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
